diff --git a/theme/base/style/admin.css b/theme/base/style/admin.css
index 1868a8aea4e..0a6a5d4ae3f 100644
--- a/theme/base/style/admin.css
+++ b/theme/base/style/admin.css
@@ -163,6 +163,7 @@
 #adminsettings .form-item .form-label {display: block;float: left;width: 12.5em;text-align: right;}
 #adminsettings .form-item .form-label .form-shortname {display:block;}
 #adminsettings .form-item .form-setting {display: block;margin-left: 13.5em;text-align: left;}
+#page-admin-setting-editorsettingstinymce.dir-rtl .form-textarea textarea {text-align: left;}
 #adminsettings .form-item .form-setting .form-htmlarea {width:  640px;display:inline;}
 #adminsettings .form-item .form-setting .form-htmlarea .htmlarea {width:  640px;display:block;}
 #adminsettings .form-item .form-setting .form-multicheckbox li {list-style: none;}